Discontinuation of Trimethoprim-sulfamethoxazole Prophylaxis in Adults on Antiretroviral Therapy in Kenya

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Both antiretroviral therapy (ART) and prevention of opportunistic infections (OIs) have been associated with significantly decreased mortality in HIV-infected individuals. Trimethoprim-sulfamethoxazole (TMP/SMZ), also known as bactrim, is a common antibiotic and used as prophylaxis for OIs. For countries with high prevalence of HIV and limited health infrastructure, the WHO endorses universal TMP/SMZ for all HIV-infected individuals. Notably, these guidelines were created prior to the scale-up of ARTs. Following ART and subsequent immune recovery, TMP/SMZ may no longer be required. In the US and Europe, for example, TMP/SMZ is discontinued after patients show evidence of immune recovery. Therefore, we propose a prospective randomized trial among HIV infected individuals on ART with evidence of immune recovery (ART for > 18mo and CD4 >350 cells/mm3) to determine whether continued TMP/SMZ prophylaxis confers benefits in decreasing morbidity (malaria, pneumonia, diarrhea), mortality, CD4 count maintenance, ART treatment failure and malaria immune responses.

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Ages Eligible for Study:

18 Years and older (Adult, Senior)

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

Participants must be at least 18 years of age.

Participants must be willing to participate and give written informed consent.

Participants must be willing and able to return for the scheduled follow-up visits.

Participants must have been on ART for > 18 months.

Participants must have a CD4 count of > 350 cells/mm3.

Participants must not be suspected of ART treatment failure.

Exclusion Criteria:

Participants must not be pregnant at enrollment (by urine HCG testing).

Participants must not be breastfeeding at the time of enrollment.

Participants must be on first-line ART therapy as defined by Kenyan National Guidelines.